more refactor on backend

src/api/search.rs

@@ -0,0 +1,48 @@
+use crate::model;
+use crate::state;
+use axum::extract::{Json, Query, State};
+use sqlx::Row;
+use std::sync::Arc;
+
+// New endpoint to search users
+pub async fn search_users_handler(
+    State(state): State<Arc<state::AppState>>,
+    Query(params): Query<model::SearchQuery>,
+    // headers: axum::http::HeaderMap,
+) -> Json<Vec<model::ChatPartner>> {
+    let search_pattern = format!("%{}%", params.q);
+
+    let users = sqlx::query(
+        r#"
+        SELECT username, phone, avatar_url
+        FROM users
+        WHERE (username LIKE ? OR phone LIKE ?)
+        LIMIT 20
+        "#,
+    )
+    .bind(&search_pattern)
+    .bind(&search_pattern)
+    .fetch_all(&state.db_pool)
+    .await;
+
+    match users {
+        Ok(rows) => {
+            let mut results = Vec::new();
+            for row in rows {
+                results.push(model::ChatPartner {
+                    username: row.get("username"),
+                    phone: row.get("phone"),
+                    avatar_url: row.get("avatar_url"),
+                    last_message: None,
+                    last_message_time: None,
+                    unread_count: 0,
+                });
+            }
+            Json(results)
+        }
+        Err(e) => {
+            eprintln!("Error searching users: {}", e);
+            Json(Vec::new())
+        }
+    }
+}